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Homebrew antenna analyzer for 1.2 ghz
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Topic: Homebrew antenna analyzer for 1.2 ghz (Read 768 times)
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Cubbie
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Homebrew antenna analyzer for 1.2 ghz
«
on:
March 07, 2020, 05:58:45 am »
I'm building one because I like to homebrew. It will cover 600 Mhz to 1600 Mhz assuming I ever get this voltage controlled oscillator to work. Right now there is no output. I am using a Z-comm V502ME01 which is a 600 to 1600 VCO.
5 volts B+ 1-21 volts tuning and 50 output at 5 Dbm. I have worked with microstripline before so I'm pretty sure that is correct. Also I'm outputting into a Mar-3 MMIC. The one thing I do not understand is the loop filter example on the tuning voltage line. It is shown in a application note. No values are given because I'm pretty sure it is frequency dependent. I thought loop filters were used in PLLs not VCOs? Is a loop filter really needed? Thanks for any ideas.
https://www.zcomm.com/wp-content/uploads/2014/06/AN-102.pdf
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Last Edit: March 07, 2020, 08:14:33 am by Cubbie
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thinkfat
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This is just a hobby I spend too much time on.
Re: Homebrew antenna analyzer for 1.2 ghz
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Reply #1 on:
March 07, 2020, 07:28:57 am »
If you don't build a PLL, or any other kind of loop, there is no loop and hence no loop filter.
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Homebrew antenna analyzer for 1.2 ghz
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